Typewriting-machine



A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED MAY 16; 1919.

Patented Oct 19,1920.

2 SHEETSSHEET 1.

A. G. F. KUROWSKI.

TYPEWRITING MACHINE.

APPLICATION FILED MAY 16, 1919.

Patented 0013. 19, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICEl 'ALFRED F. KU'BOWSKI, OFBROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD TYPEIVRITER COMPANY, OF NEWYORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING-MAOHINE.

Specification of Letters Patent.

Patented Oct. 19, 1920.

Application filed May 16, 1919. Serial No. 297,655.

To all whom it may concern:

Be it known that I, ALFRED G. F. KUROW- sin, a subject of the Emperor ofGermany, or a citizen of Germany, but having taken out preliminaryUnited States naturalization papers, residing in Brooklyn borough, inthe county of Kings, city and State of New York, have invented certainnew and useful Improvements in Typewriting-Machines, of which thefollowing is a specification.

This invention relates to typewriting machines, and more particularly totabulating mechanism for such machines.

The main object of my invention is to provide a tabulating device simpleand effective in form and readily settable for different requirements.

The invention is illustrated as applied to a typewriting machine of theUnderwood type. In the present construction, depression of the tabulatorkey will cause release of the escapement mechanism, and also serve bothto move a column-stop bar at the front of the machine to a position toenable the column-stops thereon to cooperate with a counter-stop mountedon the front of the carriage, and to move a brake bar into engagementwith a friction member supported on the front of the carriage.

In the present embodiment the movement of the column-stop bar iseffected by rocking the shaft carrying said bar by means of a slottedarm fixed on said shaft, and a bent link connected at one end with thetabulator lever, and at the other end to said arm by means of a pinentering a slot of said slotted arm, and a forked or slotted end of saidlink embracing said shaft. Upon depression of the tabulator key the pinon the link will tend to move outward in the slot of the slotted arm,and such outward movement may be controlled by giving a suitableinclination to the slot in the upper end of the link. Provision is madeof suitable spring means to return said slotted lever to normalposition.

In order to facilitate the setting of column-stops in accordance withthe indications of the pointer on a letter-space scale, the pointer isprovided with an opening immediately over the column-stop bar when innormal position to enable insertion of a stop, and with guiding devicesassociated with said opening to insure proper positionin of saidcolumn-stops.

rovision is made of a pivotally supported cover normally extending overthe column-stop bar and pointer, but cut away at its forward edge toenable passage of the pointer between the scale and the cover. hemovement of the cover may be limited by a pin-andslot connection withthe frame of the machine, and the cover may be held in raised or loweredposition by a leaf spring fixed on the frame of the machine, and asuitably shaped cooperating member connected with the cover.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a diagrammatic side elevation, partly in section, of anUnderwood typewriting machine with my invention applied thereto.

Fig. 2 is a side view in section, showing some of the parts in positionsdifferent from those shown in Fig.

Fig. 3 is a fragmentary perspective view of the tabulating mechanism atthe front of the machine, the cover being raised.

Fig. 4 is a view showing the pointer, and so much of the column-stop barand scale as is necessary to show the relation therebetween.

Upon depression of character keys 1, type-bars 2 will be swung upwardlyand rearwardly, to bring types thereon in contact with a work-sheet on aplaten 3 revolubly supported in a platen frame 4 mounted for movement ina carriage 5. Said carriage 5 is mounted on front and rear rails or bars6 and 7, respectively, and is urged in one direction by a strap 8 andspringdrum 9. In order to control the movement of said carriage 5 underthe influence of spring-drum 9, a rack 10, pivotally supported oncarriage '5 by means of arms 11, normally engages with a pinion 12having a usual oneway connection with escapement wheel 13, which iscontrolled by the usual fast and loose dogs 14 and 15, respectively.Said fast and loose dogs are normally held in forward position, but aremoved to the rear by means of a universal frame 16, which is struck by aheel 17 on a typebar 2 at the end of the printing stroke of thetype-bar.

Vi hen a tabulating movement is desired, tabulator key 18 is depressedand acts through tabulator lever 19 pivoted on shaft 20 and urged tonormal position by means of spring 21, to actuate link 22, arm 23, arm24 and bent link 25 to rock lever 26 pivoted at 2'4", and thereby raiserack 10 from engagement with pinion 12 by means of a wheel 28 mounted onsaid lever 26. The mechanism so far described is well known inconnection with the Underwood typewriting machines.

To connect lever 19 with the tabulating mechanism the front of themachine, provision is made of link 29 pivoted to lever 19 by means of ashouldered screw 30, and connected to a lever 31, by means of which arack bar or column-stop bar 82 carrying column-stops 33 is moved intoposition to cooperatewith counter-stop 3 f mounted at the front of thecarriage. Concomitantly with the movement of bar 32, a bar 35 is movedinto contact with a friction device or pad 3'5 supported on the carriageim mediately above said counter-stop. The bar 35 and friction device 36constitute means for controlling the movement of the carriage when theescapementmechanism is rendered ineffective.

In order to obtain satisfactory movement of the parts of the tabulatingmechanism when actuated by a tabulating lever 19, lever 31 is providedwith a slot 37 at its rar end, and link 29 is provided with a pin 38having threaded engagement therewith and engaging in slot 37, and at itsupper one with a forked portion embracing shaft 39 on which lever 31 ismounted. Rack bar 32 and bar are supported at one side of the machine bylever 31, and at the other by an arm 40 secured to shaft 39. A leafspring 81 secured to lever 31 and en gaging rail 6 serves to returnlever 81 and the ciated parts to normal position. It will be seen thatdepression of link 29 will tend to move pin 38 to the outer end of slot37, and that such movement is controlled in accordance with theinclination of the slot in the forked end of link 29, the shaft 39 andthe forked end of link 29 cooperating to effect a camming action.

The tabulating mechanism at the front of the machine is normally coveredby means of a cover at pivoted at 12and 13 on the frame, the movement ofthe cover being limited by a pin-and-slot connection shown at the rightof Fig. 3. l Vhen in closed position, the forward edge of cover 41 restson the main frame at opposite ends of letterspace scale 44, and saidcovertl is provided at each end of its forward edge with projections 15which serve to space the cover from the bar-carrying scale at to enablethe PLSS passage therebetween of the tip of pointer 4:6 fastened to thecarriage immediately above friction device 36.

Preferably at the right of the machine, cover ll is attached to a member47, which serves to connect the cover with the pivot 13. Pivotalmovement of member 47, and consequently of cover ll, is limited by suitable means, such as a pin e18 mounted in the frame and projecting into aslot 19 in member e7, said slot being concentric with pivot 43.

Provision is also made of a spring 50, supported at one end on the frameand having its free end in contact with member 47, the cooperatingcurved surface 51 of which is convex to such an extent that the centralportion is at a greater distance from the pivot 13 than are the endportions, which are provided with notches 52 and 53, with which the bentend of spring 50 engages to hold the cover in closed and open positions,respectively. it will be seen that the structure just described willprevent rattling of the cover when in closed position.

Immediately above the position assumed by the bar 32 under normalconditions, the pointer 4-6 is provided iwith an opening 5% ofsufficient size to enable insertion there through of a column-stop 33held between the thumb and forefinger, and lugs 55 are provided at thefront and back of said openi to serve as guides, by means of which thecolumn-stops may be properly positioned on the columnstop bar. Theclearance between pointer at; and bar 32 is such that no interferencewill result when thecolumn-stop bar is swung to rearward position.

Variations may be resorted towithin the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. In a typewriting machine, the combination with a letter-space scale,of columnstops, a column-stop rack, a member including a counter-stop tocooperate with said column-stops, means to effect a relative travelingmovement between said member and both said scale and said rack, apointer to coiiperate with said scale secured to said member and havingan opening there through above said rack, and guiding de vicespositioned oppositely with reference to said opening, whereby acolumn-stop inserted therethrough will be positioned on said rack inaccordance with the indication of said pointer on said scale.

2. In a typewriting machine, the combination with a traveling carriage,of a linespace scale at the front of the machine, and tabulatingmechanism for said carriage in cluding a column-stop rack positioned between said scale and the front of the carriage, a pointer secured tosaid carriage and extending across said rack to cooperate with saidscale, and guiding means associated with said pointer to direct acolumn-stop to a position on said rack in accordance with the indicationof said pointer on said scale.

3. In a tabulator for typewriting machines, the combination with twomembers and means to effect a letter-feed traveling movementtherebetween, of a letter-space scale on one of said members, a pointeron the other of said members to cooperate with said scale to indicatethe relative position of said members, column-stops, a columnstop bar,adapted to receive said columnstops at letter-space intervals, extendingbeneath said pointer, means to prevent a letterfeed movement betweensaid scale and said column-stop bar, and guiding means associated withsaid pointer whereby-a columnstop may be set on said column-stop bar inaccordance with the indication of said pointer.

4. In a typewriting machine, the combination with a letter-space scale,of columnstops, a column-stop rack, a member including a counter-stop tocooperate with said column-stops, means to effect relative travelingmovement of said member and both said scale and said rack, and a pointerto cooperate with said scale, said pointer having guiding means thereonto guide a columnstop into position on said rack in accordance with theindication of said pointer on said scale.

5. In a typewriting machine, the combination with a traveling carriage,of a letterspace scale at the front of the machine, a column-stop barbetween said scale and the front of said carriage, a counter-stop on thefront of said carriage, means to move said column-stop bar to enablecooperation of column-stops thereon with said counterstop, and a pointeron said carriage to cooperate with said scale, the configuration of saidpointer being such as to enable a column-stop to be set on said bar at apoint opposite the division of the scale indicated by said pointer.

6. In a typewriting machine, the combination with a traveling carriage,of tabulating means therefor comprising a rock shaft, a column-stop baradapted to receive columnstops at letter-space intervals mounted on saidshaft, a counter-stop on said carriage, and means for rocking said shaftto bring said bar into position to enable cooperation betweencolumn-stops mounted on said bar and said counter-stop, including aslotted arm mounted on said shaft, a tabulating lever, a link connectedwith said tabulating lever, a member on said link extending into theslot of said slotted arm, and cam means to determine the position ofsaid member in the slot of said slotted arm.

7. In a typewriting machine, the combination with a traveling carriage,means urging said carriage in letter-feeding direction, and anescapement mechanism to control the movement of said carriage, of a rockshaft at the front of the machine, a rack supported on said shaft,column'stops adjustably positioned on said rack, a counterstop on saidcarriage, and means for swinging said rack into position to enablecooperation between said column-stops and said counter-stop, and toconcomitantly release said escapement mechanism, including a slotted armsecured to said shaft, a bent link having a pin entering the slot ofsaid slotted arm, anda slotted end to embrace said shaft, and atabulating lever connected with said link. I

8. In a typewriting machine, the combination with a traveling carriage,of tabulating means therefor, comprising a rock-shaft, a column-stop baradapted to receive columnstops at letter-space intervals mounted on saidshaft, a counter-stop on said carriage, and means for rocking said shaftto bring saidbar into position to enable cooperation betweencolumn-stops, mounted on said bar, and said counter-stop, including aslotted arm mounted on said shaft, a tabulating lever, a link connectedwith said lever, having a member thereon extending into the slot of saidslotted arm, and a forked end embracing said rock-shaft, said forked endbeing adapted to control the movement of said member in the slot in saidslotted arm.

9. In a typewriting machine, the combination with a traveling carriage,of a letterspace scale at the front of the machine, a pointer on thefront of said carriage to cooperate with said scale, a column-stop barbetween said scale and the front of said carriage, column-stops mountedthereon, a counter-stop on the front of said carriage beneath saidpointer, and means to move said column-stop bar into position to enablecooperation of the stops thereon with the counter-stop.

10. In a typewriting machine, the combination with a traveling carriage,of a letterspace scale at the front of the machine, a pointer on thefront of said carriage to cooperate with said scale, a column-stop barbetween said scale and the front of said carriage, column-stops mountedthereon, a counter-stop on the front of said carriage beneath saidpointer, a brake device comprising a friction member on said carriageadjacent said counter-stop, and a brake bar extending across themachine, and means to move said column-stop bar into position to enablecoo eration of the column-stops thereon wit the counter-stop, andconcomitantly move said brake bar into engagement with said frictionmember.

11. In a typewriting machine, the combi nation with a traveling carriageand guid- 111g means therefor, including a front rail,- of tabulatingmechanism comprising a rock shaft at the front of the machine, acolumnstop bar supported on said shaft, columnstops on said column-stopbar, a counter stop on saidcarriage, a slotted arm secured to saidrock-shaft, a link having a member thereon entering the slot of saidslot-ted arm, and a cam-slotted portion to embrace said shaft, atabulating lever connected withsaid link, and a leaf spring fixed onsaid slotted arm and engaging said front rail: tourge said rock-shaft toits normal position.

12. In a type-writing machine, the combination with a travelingcarriage, of a bar fixed on the frame of the machine and extendingacross the front thereof, a letterspace scale on said bar, apointer onsaid carriage to cooperate with said scale, tabulating mechanismincluding a pivotally mounted column-stop bar lying between saidcarriage and said scale, column-stops thereon, a counter-stop on saidcarriage, means to move said column-stop bar into effective relationwith respect to said counter-stop, a cover pivoted to said frame at itsrear edge, and: means whereby the forward edge of said cover will bespaced from saidfixed bar to permit passage of the pointer therebetween. A

13. In a typewriti-ng machine, the combination with a travelingcarriage,of a bar fixed on the franie'of the machine and extending across thefront thereof, a letterspace scale on said bar, a pointer on saidcarriage to cooperate with said scale, tabulating mechanism including apivotally mounted column stop bar lying between said carriage and saidscale, column-stops thereon, a counter-stop on said carriage, means tomove said column-stop bar into effective relation with respect to saidcounterstop, a cover pivoted at its rear edge to said frame, meanswhereby the forward edge of said cover will be spaced from said fixedbar to permit passage of the pointer therebetween, and means foryieldingly holding.

said cover in open and closed positions.

14. In a typewriting machine, the combination with a traveling carriageand an escapement mechanism therefor, of a tabulator-lever,tabulator-lever-actuated means for releasing said carriage from thecontrol of said escapement mechanism, a rock-shaft mounted at the frontof the machine, a stopcarrying rack-bar, a friction bar supported byarms fixed on said rock-shaft, stop-carrying means, a friction membersupported on the front of the carriage, and connections between saidtabulator-lever and said rockshaft whereby, upon depression of saidtabulator-lever, said rack-bar will be positioned with a stop thereon inposition for engagement with a stop on said stop-carrying means, andsaid friction bar will be caused to engage said friction member.

ALFRED G. F. KUBOVVSKI.

Witnesses:

CATHERINE A. 'NEWELL,

JENNIE P. THORNE.

